Reviews by patients who have Tooth Pain and take Zinc either as part of daily diet or as method of treatment. Positive and negative experiences from patients with Tooth Pain that take Zinc
1 Red or black colored stool may be a sign of bleeding in the GI tract (from the esophagus, stomach, small intestine or colon) and should not be ignored.  When stool color changes, what tests need to be done depend upon depends upon what cause is suspected for the stool color change.
Black stool usually means there is an excess of dried blood present in the poop. Usually, this is not a good sign. It means there was internal bleeding somewhere in the intestinal tract -- far enough away from the rectum that this blood had time to dry.